Drilling jig



Sept. 20, 1966 J. L. CLEVELAND 3,273,426

DRILLING JIG Filed Dec. 16, 1963 2 Sheets-Sheet 2 INVENTOR x/A MES L.cLEl/EL AND ATTORNEY United States Patent f 3,273,426 DRILLING HG JamesL. Cleveland, 351 Clyde Ave, Calumet City, Ill. Filed Dec. 16, 1963,Ser. No. 330,778 6 Claims. (Cl. 77-62) This invention relates to a noveldrilling jig primarily in tended for drilling dowel holes in partsforming window sashes and doors, and so that dowel holes can beaccurately drilled at correct distances from an end of the piece engagedby the jig and at correct and desired intervals relatlve to one another.

Another object of the invention is to provide a drilling jig which maybe utilized for accurately locating holes to be drilled to receivefastenings for attaching latches and hinges to doors and the like,especially in connection with cabinet work.

More particularly, it is an object of the present invention to provide adrilling jig for accomplishing all of the functions as set forth in myprior U.S. Patent No. 3,019,- 675, issued February 6, 1962, entitledDowel Hole Drilling Jig, and which in addition can be utilized moreexpeditiously in accomplishing the various functions of the jig,primarily due to the fact that relocation of the drilling guides is notrequired with the present invention when utilized for drilling fasteningreceiving openings for hinges and latches rather than dowel holes.

Another object of the invention is to provide an improved dri-lling jigcertain of the parts of which have been reconstructed to facilitatemanufacture thereof.

Various other objects and advantages of the invention will hereinafterbecome more fully apparent from the following description of thedrawings, illustrating a presently preferred embodiment thereof, andwherein:

FIGURE 1 is an end elevational view of the improved drilling jig;

FIGURE 2 is a longitudinal sectional view thereof taken substantiallyalong the line 22 of FIGURE 1;

FIGURE 3 is a cross sectional view of the drilling jig, takensubstantially along the line 33 of FIGURE 2;

FIGURE 4 is a top plan view of the drilling jig with certain of theparts omitted;

FIGURE 5 is an enlaged fragmentary sectional view taken substantiallyalong a plane as indicated by the line 55 of FIGURE 2;

FIGURE 6 is a fragmentary sectional view taken substantially along aplane as indicated by the line 66 of FIGURE 5;

FIGURE 7 is an enlarged fragmentary cross sectional view, takensubstantially along the line 7--7 of FIGURE FIGURE 8 is a fragmentaryend elevational view looking from right to left of FIGURE 4;

FIGURE 9 is a fragmentary front elevational view, partly in section,looking from right to left of FIGURE 8, with the work piece omitted;

FIGURE 10 is a perspective view of one element of the jig;

FIGURE 11 is a view partly in section and partly in elevation showinganother drilling bit guide and a drilling bit for use therewith;

FIGURE 12 is a fragmentary front elevational view similar to FIGURE 9but looking from right to left of FIGURE 1, and

FIGURE 13 is a fragmentary sectional view taken subst-antially along aplane as indicated by the line 1-3-13 of FIGURE 2..

Referring .more specifically to the drawings, the drilling jig in itsentirety and comprising the invention is designated generally 15 andincludes a frame, designated generally *1-6. The frame 16 includes awall 17 composed 3,273,426 Patented Sept. 20, 1966 of a bottom bar 1 8,a top bar 19, corresponding end bars 20, and an intermediate bar 21. Thebars 20 and 21 extend between and merge at their ends with the bars 18and 19, and the intermediate bar 21 is disposed between and equallyspaced from the end bars 20 and combines therewith and with said bars 18and 19 to form two large openings 22 in the wall 17.

The frame 16 'incdudes a flange 23 which extends transversely from oneside of the bar 18, and a ledge 24 which extends transversely from theother side of said bar 18. The flange 2'3 and ledge 24 are disposed atright angles to the plane of the wall 17. As best seen in FIGURES '2 and4, the flange 23 has two longitudinally spaced elongated openings 25each of which extends longitudinally thereof. The openings 25 areapproximately coextensive with the openings 22. The openings 25 haveside walls which slope downwardly and inwardly relative to one another,as seen at 26 in FIGURES 3 and 13; and the upper surface of the outerportion of the flange 23 is inscribed with graduations 27, forming alinear scale. A plate 28 covers the upper surface of the ledge 24 and isdetachably secured thereto by countersunk screw fastenings 29, as seenin FIGURE 9. The flange 23, ledge 24, and plate 28 each extends fromend-to-end of the frame 16.

-Two corresponding drilling guide supports, each designated generally 30are adjustably and detachably mounted on the flange 23 and each includesa base portion 31 and two transversely spaced uprights 32 which risefrom said base portion. The supports 30 are disposed in planes crosswiseof the flange 23 and the base portions 31 have depending extensions 33which extend downwardly into the openings 2-5 and which are of length toextend across said openings. The ends of the extensions 33 convergedownwardly relative to one another, as seen in FIG- URE 13, toconformably engage the surfaces 26 when the undersides of the endportions of the bases 31, which are disposed beyond the ends of theextensions 33, are resting upon the upper surface of the flange 23. Ascrew 34 extends upwardly through an anchor bar 35 and into a threadedbore 36 of each base 31. The bars 35 spans the opening 25 and hasnotched ends 37, as seen in FIG- URE 1-3, which interengage with theside edges 26 to prevent turning of the bar 35 relative to the flange2-3 to insure an effective clamping of the support 30 in an uprightposition on the flange 2-3, when the fastening 34 is tightened.

A drilling guide 38 is adjustably mounted on each support 30 andincludes an elongated block 39 having a projection 40 which fits snuglybetween the uprights 32 of the support 30 on which said drilling guideis mounted. The adjacent opposed sides 41 of each pair of uprights 32converge relative to one another from the inner to the outer sides ofsaid uprights, as seen in FIGURES 3 and 5, and the ends of theprojection 4d are inclined to fit snugly between said sides 41, as seenin FIGURE 5, when the ends of the block 39 are in abutting engagementwith the uprights 32. A headed screw fastening 42 extends through ananchor bar 43 and into a threaded bore 4-4 of the projection 40 foranchoring the block 39 to the uprights 32. The bar 43 has notched ends45, corresponding to the notched ends 37, for engaging two sides of theuprights 32 to prevent the bar 43 from turning relative to the support30 when the screw 42 is tightened.

The block 39 has a bore 46 extending from end-toend therethrough andwhich is tapered from end-to-end thereof. The block 39 has a threadedbore 47 which is disposed substantially in alignment with the bore 44and which opens outwardly of the side of the block located remote fromthe projection 40 and into the bore 46. The bore 46 contains two ribs 48which are disposed above and beneath the bore 44 and thus nearlyopposite to the here 47. The inner faces 49 of the ribs 43 are disposedconcentric to the axis 51). Thus, the radial thickness of the ribs 48diminishes toward the restricted end of the bore 46. An Allen-typesetscrew 51 threadedly engages the bore 47. With this setscrewretracted, a drill bit guide sleeve 52 is inserted into the bore 46 fromits enlarged end toward its restricted end, and when fully applied, asseen in FIGURE 5, the setscrew 51 is tightened to move the guide sleeve52 laterally so that peripheral portions thereof will contact thesurfaces 49 of the ribs 48 for supporting the guide sleeve immovably inthe bore 46 between the inner end of the setscrew 51 and t e surfaces49, so that the axis of the bore 53 of the sleeve 52 will be disposedparallel to the axis 56 of the bore 46. From the foregoing it will bereadily apparent that the two guide sleeves 52 may be moved toward andaway from one another by longitudinally adjusting the supports 30relative to the flange 23, and said guide sleeves 52 may be adjustedtoward and away from the flange 23 by adjustment of the blocks 39longitudinally of the uprights 32, for thus adjusting the two guides 33in two directions at right angles to one another relative to the frame16.

The end uprights 20 are each provided with a recess 54, as seen inFIGURE 1, and a threaded bore 55 which extends through the upright andwhich opens int-o the recess 54. A longitudinally slotted gauge bar 56is shown in FIGURES l, 2 and 12 engaging the recess 54- of one upright20. A headed screw fastening 57 extends through the slot of the gaugebar 56 and threadedly engages the bore 55 of said recess 54 foradjustably clamping the bar 56 to said upright 20. The inner end of thebar 56 has an outturned unslotted extension 53 which extends away fromthe wall 17 over the plate 28 to form an abutment against which ispositioned an end of a piece of material 59 to be drilled. The gauge bar56 can obviously be adjusted longitudinally of the frame 16 for varyingthe position of the end of the piece 59 which engages the abutment 58.The gauge bar 56 has graduations thereon forming a linear scale 66 to beutilized in setting the gauge bar abutment 58, as seen in FIGURE 12. Oneface of the material 55 rests upon the plate 28 and an edge 61 of thematerial 59 abuts the wall 17, as seen in FIGURE 3. A clamping screw 62bears against an opposite face of the material 59 for clamping thematerial to the jig between the plate 28 and the screw 62.

The screw 62 extends threadedly through a bore 63 formed in one end of abracket 64 which is provided with an upstanding wall 65 which isdisposed midway of its ends and transversely thereof. The other end ofthe bracket 64 is bifurcated to form furcations 66 which straddle theintermediate upright 21. The furcations 66 have upstanding extensions 67which are spaced from the wall 65 and each of which combines with a partof said wall to form upwardly projecting furcations which straddle thetop bar 19. Thus, when the clamping screw 62 is in clamping engagementwith a work piece, as seen in FIGURES 1, 2 and 3, it functions to holdthe bracket 64 anchored to the wall 17 and immovable relative thereto,since the wall portions 19 and 21 fit relatively snug between the partsof the brackets straddled thereby.

With the work piece 59 thus clamped in the jig 15 and with the drillingguides 38 correctly adjusted both horizontally and vertically of theframe 16, drilling bits, not shown, may operate in the bores 53 fordrilling two dowel holes in the piece 59 spaced desired distances fromthe opposite faces of said piece, from one another, and from the end ofthe piece engaging the abutment 58. It will also be apparent that whenthe jig 15 has been properly set any number of corresponding pieces 59may be clamped thereto and drilled without resetting the drilling guides38 or the abutment 53. The inner faces of the uprights 32 are providedwith graduations forming linear scales 68 to facilitate the verticaladjustments of the drilling guides 38.

The drilling jig 15 may also be utilized for drilling holes in the faceof a piece of material to receive fastenings for attaching hinges orlatches. This can be accomplished without removing the drilling guides38 from the supports 30 or the supports 30 from the flange 23, sincewhen the clamping screw 62 is disengaged from the material 5? thebracket 64 can be displaced downwardly and to the right relative to itsposition of FIGURE 3 and thereby detached from the frame 16, so that anedge of another piece of material 69, such as a cabinet door, may berested on the plate 28 with a face 70 of the material abutting the wall17, as seen in FIGURE 8. Normally in drilling fastening openings forlatches and hinges, a guide sleeve '71, as shown in FIGURE 11, issubstituted for each of the guide sleeves 52. The guide sleeve 71 has asmaller bore 72 for receiving a smaller drilling bit 73 which has arestricted leading end 74 defining an annular shoulder 75 which limitsthe depth that the end 74 can penetrate the surface 70.

Ordinarily, when the drilling jig is utilized without the bracket 64 andclamping screw 62 a different gauge bar as shown in FIGURES 4, 8 and 9is employed, since the material is normally drilled further from an endthereof. As best seen in FIGURE 9, the substituted gauge bar 76 ispositioned with an end thereof in one of the recesses 54- and securedthereto by a headed screw 77 which engages the bore 55 of said recess.The bar 76 extends outwardly from the end of the wall 17 on which it ismounted and is provided with a longitudinal slot 78 for receiving theshanks of two headed fastenings 79 which attach a slide 80 to the frontside of the bar 76. The slide 80 has an outturned inner end 81 formingan abutment which is engaged by an end of the material piece 69, as seenin FIGURE 4, and which may be secured in different longitudinallyadjusted positions relative to the bar 76 by tightening the screws 79.The front face of the bar 76 has graduations forming a linear scale 82.

Various modifications and changes are contemplated and may obviously beresorted to, without departing from the function or scope of theinvention as hereinafter de= fined by the appended claims.

I claim as my invention:

1. A drilling jig comprising a frame, a drilling guide support, meansadjustably mounting said support on a first part of said frame, adrilling guide, means adjustably mounting the drilling guide on saidsupport, a bracket detachably anchored to a second part of the frame,and a clamping screw engaging threadedly through said bracket andadapted to clamp a piece of material against a third part of the frameand with a surface of the material facing said drilling guide, saidclamping screw, when in clamping engagement with the material,maintaining said bracket anchored to said second part of the frame, saidsecond part of the frame including a top portion and a dependingportion, said bracket having a first bifurcated portion straddling saiddepending portion and a second bifurcated portion engaging under andstraddling said top portion.

' 2. A drilling jig comprising a frame, a drilling guide support, meansadjustably mounting said support on a first part of said frame, 'adrilling guide, means adjustably mounting the drilling guide on saidsupport, a bracket detachably anchored to a second part of the frame,and a clamping screw engaging threadedly through said bracket andadapted to clamp 21 piece of material against a third part of the frameand with a surface of the material facing said drilling guide, saidclamping screw, When in clamping engagement with the material,maintaining said bracket anchored to said second part of the frame, saidbracket including an elongated body, said clamping screw engagingthreadedly through said body adjacent one end thereof, the other end ofsaid body having bifurcated portions disposed at a right angle to oneanother and embracing angularly disposed portions of said second part ofthe frame, one of said bifurcated portions opening in a direction awayfrom said third part of the frame.

3. A drilling jig comprising a frame, a drilling guide support, meansadjustably mounting said support on a first part of said frame, adrilling guide, means adjustably mounting the drilling guide on saidsupport, a bracket detachably anchored to a second part of the frame,and a clamping screw engaging threadedly through said bracket andadapted to clamp a piece of material against a third part of the frameand with a surface of the material facing said drilling guide, saidclamping screw, when in clamping engagement with the material,maintaining said bracket anchored to said second part of the frame, saidbracket having portions engaging said second frame part for holding thebracket against movement away from said third frame part or lengthwiseof the third frame part when the clamping screw is in an advancedclamping position.

4. A drilling jig comprising a frame, a drilling guide support, meansadjustably mounting said support on a first part of said frame, adrilling guide, means adjustably mounting the drilling guide on saidsupport, a bracket detachably anchored to a second part of the frame,and a clamping screw engaging threadedly through said bracket andadapted to clamp a piece of material against a third part of the frameand with a surface of the material facing said drilling guide, saidclamping screw, when in clamping engagement with the material,maintaining said bracket anchored to said second part of the frame, saiddrilling guide comprising a block having a bore extending longitudinallytherethrough, said second means cooperating with said drilling guidesupport for positioning the block with the axis thereof perpendicular tosaid surface of the material, and a drill bit receiving sleevedetachably mounted in the bore of said block, the bore of said blockbeing tapered from end-to-end thereof, the exterior of said sleeve beingof uniform diameter from end-t0-end thereof, and means for clamping thesleeve in the bore of the block with the axis of the sleeve disposedparallel to the axis of said bore.

5. A drilling jig comprising a frame including a first part, a secondpart and a third part, a drilling guide support mounted on said firstpart, a drilling guide mounted on said support, a bracket mounted on thesecond part of the frame, and a clamping screw engaging threadedlythrough said bracket and adapted to clamp a piece of material againstthe third part of the frame and with a surface of the material facingsaid drilling guide, said second part including a portion slidablyengaged by the bracket for movement toward and away from said third partand another portion forming an abutment against which the bracket isheld immovable by the clamping screw when in clamping engagement withthe material.

6. A drilling jig as in claim 5, said drilling guide comprising a blockhaving a tapered bore extending therethrough, the axis of said borebeing disposed perpendicular to said surface of the material, a drillbit receiving sleeve of uniform outer diameter from end-to-end thereofmounted in said bore, and means clamping the sleeve in the bore with theaxis of the sleeve coinciding with the axis of the bore.

References Cited by the Examiner UNITED STATES PATENTS 1,269,811 6/1918Heritage 7762 FRANCIS S. HUSAR, Primary Examiner.

1. A DRILLING JIG COMPRISING A FRAME, A DRILLING GUIDE SUPPORT, MEANSADJUSTABLY MOUNTING SAID SUPPORT ON A FIRST PART OF SAID FRAME, ADRILLING GUIDE, MEANS ADJUSTABLY MOUNTING THE DRILLING GUIDE ON SAIDSUPPORT, A BRACKET DETACHABLY ANCHORED TO A SECOND PART OF THE FRAME,AND A CLAMPING SCREW ENGAGING THREADEDLY THROUGH SAID BRACKET ANDADAPTED TO CLAMP A PIECE OF MATERIAL AGAINST A THIRD PART OF THE FRAMEAND WITH A SURFACE OF THE MATERIAL FACING SAID DRILLING GUIDE, SAIDCLAMPING SCREW, WHEN IN CLAMPING ENGAGEMENT WITH THE MATERIAL,MAINTAINING SAID BRACKET ANCHORED TO SAID SECOND PART OF THE FRAME, SAIDSECOND PART OF THE FRAME INCLUDING A TOP PORTION AND A DEPENDINGPORTION, SAID BRACKET HAVING A FIRST BIFURCATED PORTION STRADDLING SAIDDEPENDING PORTION AND A SECOND BIFURCATED PORTION ENGAGING UNDER ANDSTRADDLING SAID TOP PORTION.